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Architectural drawing for a wooden truss bridge. Bridge plan and elevation

Architectural drawing for a wooden truss bridge. Bridge plan and eleva...

Preliminary drawing showing bridge as plan and elevation; engineering drawing. UNIT title devised. Date based on truss type and date of Bulfinch's last known work. Drawing not signed; attribution based on drawi... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

St. Charles Air Line Bridge, Spanning South Branch of Chicago River, north of Sixteenth Street, Chicago, Cook County, IL

St. Charles Air Line Bridge, Spanning South Branch of Chicago River, n...

Significance: Like all Strauss heel-trunnion bascule bridges, the St. Charles Air Line Bridge rotates vertically, lifting to clear the river it spans. This particular bridge is unique, however, in that its des... More

St. Charles Air Line Bridge, Spanning South Branch of Chicago River, north of Sixteenth Street, Chicago, Cook County, IL

St. Charles Air Line Bridge, Spanning South Branch of Chicago River, n...

Significance: Like all Strauss heel-trunnion bascule bridges, the St. Charles Air Line Bridge rotates vertically, lifting to clear the river it spans. This particular bridge is unique, however, in that its des... More

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Cooperstown, Otsego County, NY

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Coopers...

Significance: The bridge is typical of many Pratt truss bridges constructed in this area during the late 1800's and early 1900's. The structure is located within the Cooperstown Historic District and is a cont... More

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Cooperstown, Otsego County, NY

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Coopers...

Significance: The bridge is typical of many Pratt truss bridges constructed in this area during the late 1800's and early 1900's. The structure is located within the Cooperstown Historic District and is a cont... More

Easton & Northern Railroad, Lehigh River Bridge, Spanning Lehigh River, Easton, Northampton County, PA

Easton & Northern Railroad, Lehigh River Bridge, Spanning Lehigh River...

Significance: This structures is significant for its highly complex geometry, with skew trusses carrying trucks on a reverse curve. It possesses a remarkable degree of integrity for a 19th century steel truss b... More

Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Spanning Schulykill River, south of Pennsylvania Turnpike (I-276), Swedesburg, Montgomery County, PA

Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...

Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More

Big Island Bridge, Spanning Green River on County Road No. 4, Green River, Sweetwater County, WY

Big Island Bridge, Spanning Green River on County Road No. 4, Green Ri...

Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Kentucky Route 228 Bridge, Spanning Wolf Creek on Kentucky Route 228, Wolf Creek, Meade County, KY

Kentucky Route 228 Bridge, Spanning Wolf Creek on Kentucky Route 228, ...

Significance: Longest of the six Whipple-Murphy truss bridges in Kentucky. Survey number: HAER KY-21 Building/structure dates: 1885 Initial Construction

Garrison Bridge, Spanning Clark Fork River at Sawmill Road, Garrison, Powell County, MT

Garrison Bridge, Spanning Clark Fork River at Sawmill Road, Garrison, ...

Significance: The bridge was associated with the development of the community of Garrison as an important railroad junction and division point on the Northern Pacific Railway. The bridge provided a vehicular co... More

Milltown Bridge, Spanning the Blackfoot River on Anaconda Street, Milltown, Missoula County, MT

Milltown Bridge, Spanning the Blackfoot River on Anaconda Street, Mill...

Significance: The bridge is associated with the early 20th century development of Montana's highway system. The bridge provided an important vehicular connection across the Blackfoot River on a state highway i... More

Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Route 1325, Valley Falls, Jefferson County, KS

Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...

Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More

Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Route 1325, Valley Falls, Jefferson County, KS

Half-Mound Bridge, Spanning Delaware River on Federal Aid Secondary Ro...

Significance: The Half Mound Bridge is a rare surviving example of a Baltimore truss. Survey number: HAER KS-1 Building/structure dates: after. 1875- before. 1900 Initial Construction Building/structure date... More

Milk River Bridge at Coberg, Spanning Milk River, Coburg, Blaine County, MT

Milk River Bridge at Coberg, Spanning Milk River, Coburg, Blaine Count...

Significance: This single span, pin-connected Camelback through truss (with subdivided member) was erected in 1916 by O.E. Peppard of Missoula, and is the only existing timber structure of this type in the stat... More

Mill Creek Bridge, Mill Creek, Alton, Crawford County, IN

Mill Creek Bridge, Mill Creek, Alton, Crawford County, IN

Significance: A pin-connected Pratt through truss with auxiliary horizontal bracing between vertical members. This bracing is similar to that found on many Pratt trusses built by the Wrought Iron Bridge Co. of... More

Purdon Crossing Bridge, Nevada City, Nevada County, CA

Purdon Crossing Bridge, Nevada City, Nevada County, CA

Significance: This is a rare surviving example of a pin-connected Pratt Half-Through Truss. Survey number: HAER CA-40 Building/structure dates: 1889 Initial Construction

Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, north of Paradise Street, Phoenixville, Chester County, PA

Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...

Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, Harford County, MD

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, ...

Significance: The Susquehanna River Bridge was constructed in 1908 to replace an older, timber Howe truss structure. The first bridge built by the B&O Railroad on this site consisted of twelve 250 foot spans, ... More

Nimrod Bridge, Spanning Fourche Lafave River at CR 18, Nimrod, Perry County, AR

Nimrod Bridge, Spanning Fourche Lafave River at CR 18, Nimrod, Perry C...

Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson County, KS

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson Cou...

Significance: Wrought iron bowstring arch. Survey number: HAER KS-2 Building/structure dates: ca. 1870- ca. 1879 Initial Construction

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson County, KS

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson Cou...

Significance: Wrought iron bowstring arch. Survey number: HAER KS-2 Building/structure dates: ca. 1870- ca. 1879 Initial Construction

Long-Allen Bridge, Texas Street Bridge, Spanning the Red River on US 80, Shreveport, Caddo Parish, LA

Long-Allen Bridge, Texas Street Bridge, Spanning the Red River on US 8...

Significance: The Long-Allen Bridge is significant as the first vehicular and pedestrian bridge crossing the Red River in Shreveport. Bridge construction began in September of 1931 and the bridge was formally o... More

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Street to Indiana state line, Chicago, Cook County, IL

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...

Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevier County, TN

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...

Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevier County, TN

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...

Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More

Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River, south of Lehigh River, Easton, Northampton County, PA

Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River...

Significance: This structure occupies the piers of the first railroad bridge to cross the Delaware River at Easton. It is also notable for its fish-belly deck trusses, an unusual variant of the Pratt design. U... More

Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanning Calumet River, east of Chicago Skyway (I-90), Chicago, Cook County, IL

Pittsburgh, Fort Wayne & Chicago Railway, Calumet River Bridge, Spanni...

See also HAER IL-161 for additional documentation. Significance: The Pittsburgh, Fort Wayne & Chicago Railway's two parallel vertical-lift spans over the Calumet River (of which one survives), and two neighbori... More

Canyon Creek Bridge No. 924, Milepost 592.12, Casper, Natrona County, WY

Canyon Creek Bridge No. 924, Milepost 592.12, Casper, Natrona County, ...

Picryl description: Public domain image of an arch bridge, stone structure, architecture, free to use, no copyright restrictions.

King Bridge, Spanning Black Warrior River on U.S. Highway 43, Demopolis, Marengo County, AL

King Bridge, Spanning Black Warrior River on U.S. Highway 43, Demopoli...

Survey number: HAER AL-206 Building/structure dates: 1988 Demolished Public domain photograph - historical image of Alabama, United States, free to use, no copyright restrictions image - Picryl description

King Bridge, Spanning Black Warrior River on U.S. Highway 43, Demopolis, Marengo County, AL

King Bridge, Spanning Black Warrior River on U.S. Highway 43, Demopoli...

Survey number: HAER AL-206 Building/structure dates: 1988 Demolished Public domain photograph - historical image of Alabama, United States, free to use, no copyright restrictions image - Picryl description

Griggs County Bridge, Spanning Sheyenne River at Route 2, Cooperstown, Griggs County, ND

Griggs County Bridge, Spanning Sheyenne River at Route 2, Cooperstown,...

Significance: The Griggs County Bridge is a single-span, Warren type through truss bridge. The Warren type was commonly built on larger roadway systems in North Dakota in the period 1900-1940. Because of incr... More

Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Ridge, Frederick County, MD

Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Rid...

Significance: This is a well preserved example of a Pratt Through Truss bridge with pin connections. As of 1983, it is the only bridge known to survive in the United States that can be directly attributed to t... More

Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Ridge, Frederick County, MD

Old Mill Road Bridge, Spanning Owens Creek on Old Mill Road, Rocky Rid...

Significance: This is a well preserved example of a Pratt Through Truss bridge with pin connections. As of 1983, it is the only bridge known to survive in the United States that can be directly attributed to t... More

Sand Bar Ferry Bridge, Spanning Savannah River  on State Highway 28, Augusta, Richmond County, GA

Sand Bar Ferry Bridge, Spanning Savannah River on State Highway 28, A...

Significance: The Sand Bar Ferry Bridge on South Carolina Route 28 over the Savannah River linking Aiken County, South Carolina and Richmond County, Georgia is an example of one of the early metal truss bridges... More

Sand Bar Ferry Bridge, Spanning Savannah River  on State Highway 28, Augusta, Richmond County, GA

Sand Bar Ferry Bridge, Spanning Savannah River on State Highway 28, A...

Significance: The Sand Bar Ferry Bridge on South Carolina Route 28 over the Savannah River linking Aiken County, South Carolina and Richmond County, Georgia is an example of one of the early metal truss bridges... More

Sand Bar Ferry Bridge, Spanning Savannah River  on State Highway 28, Augusta, Richmond County, GA

Sand Bar Ferry Bridge, Spanning Savannah River on State Highway 28, A...

Significance: The Sand Bar Ferry Bridge on South Carolina Route 28 over the Savannah River linking Aiken County, South Carolina and Richmond County, Georgia is an example of one of the early metal truss bridges... More

Rock House Ford Bridge, Spanning North Moreau River at County Road 39, Russellville, Cole County, MO

Rock House Ford Bridge, Spanning North Moreau River at County Road 39,...

Significance: Built as a cooperative venture between Cole and Moniteau counties, the Rock House Ford Bridge is one of the few pin-connected Parker trusses remaining in use on Missouri's roadways. Thousands of ... More

Riverside Avenue Bridge, Riverside Avenue over Northeast Corridor Railroad right-of-way, Greenwich, Fairfield County, CT

Riverside Avenue Bridge, Riverside Avenue over Northeast Corridor Rail...

Significance: Riverside Avenue Bridge is one of but a handful of cast-iron truss bridges still in use. Designed by F.C. Lowthorp and built by Keystone Bridge Company in 1871, the structure was originally part ... More

Riverside Avenue Bridge, Riverside Avenue over Northeast Corridor Railroad right-of-way, Greenwich, Fairfield County, CT

Riverside Avenue Bridge, Riverside Avenue over Northeast Corridor Rail...

Significance: Riverside Avenue Bridge is one of but a handful of cast-iron truss bridges still in use. Designed by F.C. Lowthorp and built by Keystone Bridge Company in 1871, the structure was originally part ... More

Post Road Bridge, State Route 7-A, Havre de Grace, Harford County, MD

Post Road Bridge, State Route 7-A, Havre de Grace, Harford County, MD

Significance: The bridge, a subdivided Pratt through truss commonly known as a Baltimore truss with substruts and subties, is an example of an early truss form developed for use on long spans. The bridge was f... More

Bridgeport Swing Span Bridge, Spanning Tennessee River, Bridgeport, Jackson County, AL

Bridgeport Swing Span Bridge, Spanning Tennessee River, Bridgeport, Ja...

Significance: The Bridgeport Swing Span Railroad Bridge embodies the distinctive characteristics of a type, period and method of construction. Its method of construction (pin-connected) is rare for a swing bri... More

Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen River, East of State Route 590, Lackawaxen, Pike County, PA

Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...

Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More

Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at St. Marys Falls Canal, Sault Ste. Marie, Chippewa County, MI

Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at ...

Significance: The Sault Ste. Marie International Railroad Bridge has nine camelback truss spans crossing the St. Marys River with bascule and vertical lift bridge components crossing the American Locks at the S... More

Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at St. Marys Falls Canal, Sault Ste. Marie, Chippewa County, MI

Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at ...

Significance: The Sault Ste. Marie International Railroad Bridge has nine camelback truss spans crossing the St. Marys River with bascule and vertical lift bridge components crossing the American Locks at the S... More

Lower Gassaway Bridge, State Route 137, spanning Twelve Mile Creek, Norris, Pickens County, SC

Lower Gassaway Bridge, State Route 137, spanning Twelve Mile Creek, No...

1983 Charles E. Peterson Prize, Honorable Mention Significance: The Lower Gassaway Bridge was the last remaining covered bridge at its original site in the state until it collapsed in 1982. Survey number: HABS... More

Span waiting for spring tide of 8'-6" C. Bayliss photo, Sydney

Span waiting for spring tide of 8'-6" C. Bayliss photo, Sydney

Photograph shows span of Hawkesbury River Railway Bridge, New South Wales, Australia, atop timber framework on pontoon. In album: E.K. Morse. Hawkesbury Bridge, N.S.W., page 24. Album documents the role of the... More

The Robert C. Byrd Bridge, a 720-foot continuous truss bridge that crosses the Ohio River between Huntington, West Virginia, and Chesapeake, Ohio

The Robert C. Byrd Bridge, a 720-foot continuous truss bridge that cro...

Title, date and keywords based on information provided by the photographer. The crossing was constructed to replace an old, narrow two-lane structure that was demolished after 69 years of service in a spectacul... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycoming County, PA

Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...

Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More

Choctaw Bottoms Road Bridge, Spanning Choctaw Creek at Choctaw Bottoms Road, Denison, Grayson County, TX

Choctaw Bottoms Road Bridge, Spanning Choctaw Creek at Choctaw Bottoms...

Significance: The Choctaw Bottoms Road Bridge is one of two extant bridges in Texas known to have been erected by the American Bridge Company of New York, a major twentieth-century bridge building firm. Survey... More

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Cooperstown, Otsego County, NY

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Coopers...

Significance: The bridge is typical of many Pratt truss bridges constructed in this area during the late 1800's and early 1900's. The structure is located within the Cooperstown Historic District and is a cont... More

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Cooperstown, Otsego County, NY

Mill Street Bridge, Spanning Susquehanna River at Mill Street, Coopers...

Significance: The bridge is typical of many Pratt truss bridges constructed in this area during the late 1800's and early 1900's. The structure is located within the Cooperstown Historic District and is a cont... More

Pennsylvania Railroad, 52nd Street Bridge, North Fifty-second Street at Lancaster Avenue, Philadelphia, Philadelphia County, PA

Pennsylvania Railroad, 52nd Street Bridge, North Fifty-second Street a...

Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More

Pennsylvania Railroad, 52nd Street Bridge, North Fifty-second Street at Lancaster Avenue, Philadelphia, Philadelphia County, PA

Pennsylvania Railroad, 52nd Street Bridge, North Fifty-second Street a...

Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More

Henefer Bridge, Spanning Weber River at Center Street, Henefer, Summit County, UT

Henefer Bridge, Spanning Weber River at Center Street, Henefer, Summit...

Significance: The Henefer Bridge is a single-span pony truss bridge constructed in 1907-1908. The bridge is one of the few, if not the only, example of a pony truss with pinned connections built in the State o... More

Cairo Bridge, Spanning Ohio River, Cairo, Alexander County, IL

Cairo Bridge, Spanning Ohio River, Cairo, Alexander County, IL

See also HAER NE-2 for additional documentation. Survey number: HAER IL-36

Easton & Northern Railroad, Lehigh River Bridge, Spanning Lehigh River, Easton, Northampton County, PA

Easton & Northern Railroad, Lehigh River Bridge, Spanning Lehigh River...

Significance: This structures is significant for its highly complex geometry, with skew trusses carrying trucks on a reverse curve. It possesses a remarkable degree of integrity for a 19th century steel truss b... More

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Route 487 (Legislative Route 283), Bloomsburg, Columbia County, PA

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...

Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Route 487 (Legislative Route 283), Bloomsburg, Columbia County, PA

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...

Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Route 487 (Legislative Route 283), Bloomsburg, Columbia County, PA

East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...

Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spanning Little Shenango River, Greenville, Mercer County, PA

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...

Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spanning Little Shenango River, Greenville, Mercer County, PA

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...

Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spanning Little Shenango River, Greenville, Mercer County, PA

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...

Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spanning Little Shenango River, Greenville, Mercer County, PA

College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...

Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More

Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Spanning Schulykill River, south of Pennsylvania Turnpike (I-276), Swedesburg, Montgomery County, PA

Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...

Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More

Crum Road Bridge, Spanning Israel Creek at Crum Road, Walkersville, Frederick County, MD

Crum Road Bridge, Spanning Israel Creek at Crum Road, Walkersville, Fr...

Significance: Listed in the National Register of Historic Places in 1978, the Crum Road bow string arch truss bridge is significant for its unusual design and because it is among the oldest steel or iron truss ... More

Phoenix Iron Company, French Creek Bridge, Spanning French Creek between Gay Street & Main Street, Phoenixville, Chester County, PA

Phoenix Iron Company, French Creek Bridge, Spanning French Creek betwe...

Unprocessed Field note material exists for this structure: N595 Survey number: HAER PA-493-B

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 miles south of Bloomsburg, Catawissa, Columbia County, PA

Catawissa Bridge, Spanning north branch of Susquehanna River, 3.5 mile...

Significance: The existing Catawissa Bridge, built in 1898 by the Pennsylvania Bridge Company of Beaver Falls, Pennsylvania, consists of four (4) steel through-truss spans, each 304 feet long, for a total lengt... More

Philadelphia & Western Railway, Bridgeport Bridge, Spanning Schulykill River, west of DeKalb Street, Bridgeport, Montgomery County, PA

Philadelphia & Western Railway, Bridgeport Bridge, Spanning Schulykill...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Garrison Bridge, Spanning Clark Fork River at Sawmill Road, Garrison, Powell County, MT

Garrison Bridge, Spanning Clark Fork River at Sawmill Road, Garrison, ...

Significance: The bridge was associated with the development of the community of Garrison as an important railroad junction and division point on the Northern Pacific Railway. The bridge provided a vehicular co... More

Brady Street Bridge, Spanning Monongahela River, Pittsburgh, Allegheny County, PA

Brady Street Bridge, Spanning Monongahela River, Pittsburgh, Allegheny...

See also HAER PA-3 for additional documentation. Includes photographs & written data. Unprocessed Field note material exists for this structure: FN-180 Survey number: HABS PA-614 Building/structure dates: 189... More

New York & Mahopac Railroad, Bridge L-158, Schoolhouse Road, Goldens Bridge, Westchester County, NY

New York & Mahopac Railroad, Bridge L-158, Schoolhouse Road, Goldens B...

Significance: The development of the metal truss bridge in America largely paralleled the needs of the railroads, and the through-truss double-intersection form patented by Squire Whipple in 1846 and modified b... More

Mill Creek Bridge, Mill Creek, Alton, Crawford County, IN

Mill Creek Bridge, Mill Creek, Alton, Crawford County, IN

Significance: A pin-connected Pratt through truss with auxiliary horizontal bracing between vertical members. This bracing is similar to that found on many Pratt trusses built by the Wrought Iron Bridge Co. of... More

Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine Creek & U.S. Route 322, Downingtown, Chester County, PA

Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...

Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More

Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine Creek & U.S. Route 322, Downingtown, Chester County, PA

Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...

Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More

Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whitford Road, Whitford, Chester County, PA

Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...

Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More

Edgefield County Bridge No. 3, Road S-63 spanning Log Creek, Pleasant Lane, Edgefield County, SC

Edgefield County Bridge No. 3, Road S-63 spanning Log Creek, Pleasant ...

Significance: Of the approximately 137 metal truss bridges known to exist in South Carolina, this structure is one of the 66 Pratt through truss bridges listed in the South Carolina Metal Truss Highway Bridge I... More

Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, north of Paradise Street, Phoenixville, Chester County, PA

Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...

Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, Harford County, MD

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, ...

Significance: The Susquehanna River Bridge was constructed in 1908 to replace an older, timber Howe truss structure. The first bridge built by the B&O Railroad on this site consisted of twelve 250 foot spans, ... More

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, Harford County, MD

Susquehanna River Bridge, Spanning Susquehanna River, Havre de Grace, ...

Significance: The Susquehanna River Bridge was constructed in 1908 to replace an older, timber Howe truss structure. The first bridge built by the B&O Railroad on this site consisted of twelve 250 foot spans, ... More

Nimrod Bridge, Spanning Fourche Lafave River at CR 18, Nimrod, Perry County, AR

Nimrod Bridge, Spanning Fourche Lafave River at CR 18, Nimrod, Perry C...

Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson County, KS

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson Cou...

Significance: Wrought iron bowstring arch. Survey number: HAER KS-2 Building/structure dates: ca. 1870- ca. 1879 Initial Construction

Dry Creek Bridge, Spanning Dry Creek at Cook Road, Ione, Amador County, CA

Dry Creek Bridge, Spanning Dry Creek at Cook Road, Ione, Amador County...

Significance: The Dry Creek Bridge on Cook Road is the oldest known unmodified metal truss bridge in California erected by the San Francisco Bridge Company. This Pratt through truss bridge was determined eligi... More

Dry Creek Bridge, Spanning Dry Creek at Cook Road, Ione, Amador County, CA

Dry Creek Bridge, Spanning Dry Creek at Cook Road, Ione, Amador County...

Significance: The Dry Creek Bridge on Cook Road is the oldest known unmodified metal truss bridge in California erected by the San Francisco Bridge Company. This Pratt through truss bridge was determined eligi... More

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Street to Indiana state line, Chicago, Cook County, IL

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...

Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Street to Indiana state line, Chicago, Cook County, IL

Chicago Skyway Toll Bridge, I-90, for 7.8 miles from South State Stree...

Significance: The Chicago Skyway Toll Bridge system crosses the Calumet River on a 650'-0"-long cantilever Warren through truss. This is Chicago's highest and longest bridge, and perhaps more importantly, its ... More

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevier County, TN

Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...

Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More

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